baber/WOPTO huggingface dataset:
Patent WO-2018161510-A1 (WO)
Inventor: ZHANG WEILIANG
IPC: H04B10/25
Filed: 2017-09-05
Abstract: A data transmission method, comprising: an optical line terminal (OLT) dividing logical links supported by an optical network unit (ONU) into one or more logical link groups; and the OLT allocating a bandwidth to each of the logical link groups of the ONU, such that one or more logical links in said logical link group of the ONU share said bandwidth to transmit data
Patent WO-2019010799-A1 (WO)
Title: Internet of things terminal migration method and gateway
Inventor: DU GUANGDONG
IPC: H04L12/66
Filed: 2017-09-07
Abstract: Disclosed in the present invention is an Internet of Things terminal migration method for use in an Internet of Things system, the Internet of Things system comprising a gateway and X repeaters connected to the gateway, X being an integer greater than 1, and comprising: if the gateway has not received a first feedback message of a first repeater in a first time period, the gateway determines a second repeater on the basis of a preset link exception handling rule; and the gateway migrates an Internet of Things terminal carried by the first repeater to the second repeater. Also provided in the embodiments of the present invention is a gateway. The embodiments of the present invention can solve the problem of maintaining normal data exchange between objects when there is a fault in the data exchange link.
Patent WO-2019047267-A1 (WO)
Title: Method for blocking contact of particulate superphosphate with particulate urea
Inventor: CAO SUFEN
IPC: C05G3/20
Filed: 2017-09-19
Abstract: Disclosed is a method for blocking direct contact between particulate superphosphate and particulate urea, comprising the following steps: feeding the particulate superphosphate into a front end of a coating drum, a disc or a mixer having mixing functions, and spraying a layer of a barrier agent onto the surface of the particulate superphosphate; then spraying a layer of medium-level elemental inorganic powder or inert powder such as kaolin, talcum powder, attapulgite, bentonite, gypsum and the like in the rear end of the coating drum, the disc or the mixer having mixing functions, and performing sufficient mixing, so as to form a tight barrier layer on the surface of the particulate superphosphate. When the particulate superphosphate having been treated in such manner and the particulate urea are mixed in an arbitrary ratio, the situation of becoming wet and slimy, caused by the reaction between free inorganic acids remaining in the superphosphate and the urea, will not occur. The particulate superphosphate treated by means of this method can be stably mixed with a particulate urea fertilizer, without absorbing moisture, becoming slimy, or agglomerating, and the process is simple and is convenient to operate.
Patent WO-2018192179-A1 (WO)
Inventor: GAO FEI
IPC: H04L29/12
Filed: 2017-09-26
Abstract: Selon certains modes de réalisation, la présente invention concerne un procédé et un dispositif d'attribution d'adresse de protocole Internet (IP) et un équipement de locaux d'abonné (CPE), le procédé consistant à : recevoir des informations de demande utilisées pour demander une adresse IP d'application envoyée par un client côté réseau local (LAN) d'un dispositif d'accès de terminal sans fil ; lors de la détermination du fait que le client côté LAN est un client de premier type, utiliser une première adresse IP de réseau public attribuée par un côté réseau au dispositif d'accès de terminal sans fil en tant que passerelle côté LAN utilisée pour attribuer l'adresse IP de réseau public au client de premier type et attribuer une adresse IP de réseau public au client de premier type à condition que le dispositif d'accès de terminal sans fil soit déjà relié au réseau ; et/ou lors de la détermination du du fait que le client côté LAN est un client de second type, convertir une adresse IP de réseau privé attribuée au client de second type en une adresse IP de réseau public à condition que le dispositif d'accès de terminal sans fil soit déjà relié au réseau. La présente invention peut résoudre le problème selon lequel un dispositif d'accès à un terminal sans fil attribue une adresse IP à un utilisateur côté LAN de manière à accéder à internet.
Patent WO-2019028996-A1 (WO)
Title: Multifunctional gnss antenna
Inventor: WU WENPING
IPC: H01Q1/52
Filed: 2017-10-11
Abstract: The present utility model relates to the technical field of satellite navigation antennas, and discloses a multifunctional GNSS antenna. The multifunctional GNSS antenna comprises: stackedly provided, a PCB board, a first dielectric board, and a second dielectric board. The lower surface of the PCB board is provided with a circuit network covered by means of a metal shield cover. A first metal layer is provided on the upper surface of the first dielectric board; the lower surface of the first dielectric board abuts against the upper surface of the PCB board; and a first feed probe is connected to the circuit network by penetrating the first metal layer and the first dielectric board. Third metal layers are embedded in the edge and the side face of the first dielectric board; third feed probes connect the third metal layers to the circuit network; and the first short circuit probe shorts the third metal layers to the ground. The upper surface of the second dielectric board is provided with a second metal layer, and a second feed probe connects the second metal layer to the circuit network. The multifunctional GNSS antenna provided by the utility model saves space, avoids interference and coupling between different antennas, and improves communication stability and reliability.
Patent WO-2019024283-A1 (WO)
Title: Closed-loop management system and method for application regarding blood for clinical use
Inventor: ZHANG GUANJING
IPC: G06F19/00
Filed: 2017-10-28
Abstract: A closed-loop management system and method for application regarding blood for clinical use. The method comprises the steps of: acquiring a blood type and a test result of a patient, and receiving, from a doctor's client, transfusion information about the patient (S31); establishing, according to a blood transfusion volume, a checking, signing and issuing configuration process node of a transfusion application form, and hierarchically carrying out checking, signing and issuing (S32); generating a specimen barcode according to a pre-set specimen barcode generation rule (S33); invoking a blood typing result, an antibody screening result and a cross-matching result of the patient according to the specimen barcode, and generating a blood matching report when it is determined that the current information is consistent with historical information (S34); generating a blood distribution form according to the blood matching report and a blood bag corresponding to the blood matching report (S35); generating a transfusion process record (S36); and generating, according to a pre-set transfusion case history template, an electronic transfusion case history of the patient within a pre-set time after transfusion is completed (S37). The present invention can ensure information traceability in the clinical blood use process, thereby improving the reasonability of clinical blood use.
Patent WO-2019084801-A1 (WO)
Inventor: SU WENYI
IPC: H04N19/527
Filed: 2017-10-31
Abstract: 一种运动估计方法和装置，该方法可以包括：根据当前帧和当前参考帧，确定所述当前帧相对于所述当前参考帧的全局运动矢量；根据所述全局运动矢量，对目标帧进行运动估计。本申请的运动估计方法和装置，预先计算当前帧相对于当前参考帧的全局运动矢量即整体偏移，使得在对待运动估计的目标帧运动估计时，可以参考全局运动矢量，从而降低运动估计的整体复杂度。
Patent WO-2019104688-A1 (WO)
Inventor: ZHONG ZHAOYU
IPC: G06F3/041
Filed: 2017-11-30
Abstract: 一种手写板的输入数据处理方法、电子设备。所述方法包括：按照预设时间间隔获取手写板上产生的输入数据（101）；若所述输入数据为连续书写操作产生的第一个书写数据，则依据第一数据格式将所述输入数据生成数据包（104）；若所述输入数据不为书写操作产生的书写数据，或者所述输入数据为连续书写操作产生的非第一个书写数据，则依据第二数据格式将所述输入数据生成数据包（105）；将生成的数据包发送给接收端系统（106）。手写板的输入数据处理方法在不改变数据源的情况下通过重新组织数据包的数据格式，可减少数据包的数据段数量，从而可以显著地降低存储数据所占用的存储空间以及提高数据的传输速度，以利于提高接收端系统对书写操作的响应速度。
Patent WO-2019109345-A1 (WO)
Title: 一种被用于无线通信的用户设备、基站中的方法和装置
Inventor: WU KEYING
IPC: H04W72/12
Filed: 2017-12-08
Abstract: 本申请公开了一种被用于无线通信的用户、基站中的方法和装置。用户设备接收第一信令，第二信令和第三信令，并在第一子频带中接收或发送第一无线信号。第一信令被用于确定M个信息集合，任一信息集合包括正整数个信息元素，任一信息元素包括一个第一类索引及一个第二类索引集合，一个第二类索引集合包括一个或多个第二类索引。第二信令被用于从所述M个信息集合中确定第一信息集合。第三信令和第二信令关联，被用于从第一信息集合中确定第一信息元素。第一信息元素中的第二类索引标识的天线端口组被用于第一无线信号的接收或发送。第三信令包括所述第一无线信号的调度信息。上述方法降低了非授权频谱上每次突发中波束管理和指示的信令开销。
Patent WO-2019113990-A1 (WO)
Title: 一种满栽式插秧方法
Inventor: YU YONGBO
IPC: A01C11/02
Filed: 2017-12-18
Abstract: 一种满栽式插秧方法，按下列步骤实施：插秧前准备-机械插秧作业，其中插秧前准备步骤包括种植前土地准备、秧苗准备、机械准备、插苗前插秧机的预设和插秧机启动，作业步骤包括装秧及秧苗补给、划印器的使用方法、侧对行器的使用方法、插深的调整和行驶路线；该方法根据科学的规划路线保证插秧机不走回头路，减少人工的补栽，实现一次性满栽，合理科学的调整取苗量、分秧次数、株距、插深提高秧苗的存活率，采用插秧机快速载插，降低人工成本，实现高速采用有利于规模化经营和农机服务产业化。
Patent WO-2018133610-A1 (WO)
Title: 包含聚氨酯改性羧基丁苯共聚物的胶乳及其制备方法
Inventor: JIANG YIMING
IPC: C08F283/00
Filed: 2017-12-19
Abstract: 包含聚氨酯改性羧基丁苯共聚物的胶乳以及制备所述胶乳的方法，其中所述聚氨酯改性羧基丁苯共聚物中聚氨酯和羧基丁苯共聚物经由共价键连接，并且所述聚氨酯包含亲水基。包含聚氨酯改性羧基丁苯共聚物的胶乳兼具了羧基丁苯胶乳和聚氨酯胶乳两者的优点，性能优异，可作为粘合剂用于地毯生产、建筑、造纸、皮革、纺织印染和水泥。
Patent WO-2019127051-A1 (WO)
Title: 手写输入装置及其输入提示方法
Inventor: WANG JI
IPC: G06K9/68
Filed: 2017-12-26
Abstract: 一种输入提示方法，应用于一手写输入装置(100)中，所述手写输入装置(100)包括手写板(1)以及手写笔(2)，其所述输入提示方法包括：在手写板进入练字模式时，获取当前待练写的标准字(S101)；根据所述标准字每一笔划的笔迹在手写板确定所述标准字的每一笔划对应的参考坐标区域(S102)；获取手写板侦测的手写笔书写的每一笔划的触摸轨迹位置确定书写的笔划的坐标区域，并确定书写的笔划的坐标区域与标准字的对应笔划的参考坐标区域不一致的目标区域，控制在所述目标区域产生提示信号(S103)。所述手写输入装置(100)及其输入提示方法，能够在用户进行练字时，对用户每一笔划与标准字的对应笔划的差异都进行及时提示。
Patent WO-2018126977-A1 (WO)
Title: Procédés et dispositifs d'accès à un réseau d'accès radio
Inventor: JACTAT CAROLINE
IPC: H04W24/10
Filed: 2017-12-28
Abstract: L'invention concerne un procédé permettant à un équipement utilisateur (102) d'accéder à des services fournis par un réseau d'accès radio par configuration de l'équipement utilisateur (UE) avec des informations de configuration qui comprennent des règles pour sélectionner une ou plusieurs procédures parmi une pluralité de procédures d'accès à utiliser par l'UE pour accéder à des services fournis par le réseau d'accès radio qui peut être un réseau nouvelle radio/5G (101). Des procédures d'accès peuvent comprendre une procédure basée sur autorisation; une procédure sans autorisation et une procédure de repli à utiliser en cas de défaillance d'une tentative d'accès initial. Les règles peuvent être basées sur le type de service requis par l'UE, tel que la transmission et/ou la réception de données, la transmission et/ou la réception d'un appel vocal, une demande d'informations de système.
Patent WO-2019136723-A1 (WO)
Title: Uplink data transmission method, and related devices
Inventor: CHEN WENHONG
IPC: H04W72/04
Filed: 2018-01-12
Abstract: Provided are an uplink data transmission method, and related devices. The method comprises: a user equipment determining an uplink bandwidth part (BWP) used for transmitting a physical uplink shared channel (PUSCH); the user equipment determining a PUSCH transmission parameter corresponding to the uplink BWP; and the user equipment transmitting the PUSCH on the uplink BWP according to the PUSCH transmission parameter. By means of the embodiments of the present application, the flexibility of PUSCH transmission can be improved.
Patent WO-2018214547-A1 (WO)
Inventor: LI HANZHAO
IPC: G02B27/22
Filed: 2018-01-17
Abstract: 一种双向可调虚拟像素灯柱，包括有中空的柱体(a1)，柱体(a1)顶部设有LED灯(a2)，柱体(a1)顶部外围侧面对称开有两个延伸窗；柱体(a1)内部设有第一旋转电机(a3)和第二旋转电机(a4)，第一旋转电机(a3)动力输出端连接有第一导光板(a7)，第二旋转电机(a4)动力输出端连接有第二导光板(a8)；第一导光板(a7)从一个延伸窗延伸出去，第二导光板(a8)从另一个延伸窗延伸出去；通过为柱子中设有可上下翻动的导光板(a7，a8)，来对像素进行一个虚拟的补充，而且导光板(a7，a8)的光线柔和，其能够有效将两个像素之间的过渡虚拟处理，形成一个过渡，提高立体展示的视觉效果。
Patent WO-2018214582-A1 (WO)
Inventor: YE WEICAI
IPC: A45D40/16
Filed: 2018-01-18
Abstract: L'invention concerne une machine tournante de tube de rouge à lèvres comprenant une base (11), la base (11) étant dotée d'au moins un ensemble de mécanisme de rotation de tube, chaque ensemble de mécanisme de rotation de tube comprenant un cadre de machine (12), un premier moteur d'entraînement (21) étant fixé sur le cadre de machine (12), et une extrémité de sortie d'énergie du premier moteur d'entraînement (21) étant connectée à un mécanisme de rotation circulant. Par un agencement simple et rationnel, la propriété d'un matériau piézoélectrique est fondue de manière innovante avec le dispositif de sorte que la vitesse de rotation du tube est rapide, le fonctionnement est pratique et de multiples mécanismes de rotation du tube peuvent être agencés au niveau du même poste de travail.
Patent WO-2019148465-A1 (WO)
Title: Control signaling transmission method, and terminal and base station
Inventor: ZHU YAJUN
IPC: H04W72/04
Filed: 2018-02-02
Abstract: The present disclosure relates to a control signaling transmission method, a terminal, and a base station, pertaining to the technical field of wireless communications. The method comprises: a terminal determining a resource location of at least one control channel for repeated transmission, the at least one control channel being located in a control area; and the terminal detecting, according to the resource location, control signaling transmitted by a base station by means of the at least one control channel, so as to acquire the control signaling. The terminal of the present disclosure determines a resource location of a control channel for repeated transmission and detects control signaling according to the determined resource location, thereby shortening the detection time of control signaling and improving the reliability of control signaling transmission.
Patent WO-2018145623-A1 (WO)
Title: 桥梁桩基的u型结构托换转移系统及其施作方法
Inventor: SI MINGYONG
IPC: E02D27/48
Filed: 2018-02-06
Abstract: 一种桥梁桩基的U型结构托换转移系统，包括在既有桥梁两侧施作的围堰，在既有桥梁的既有桩基周边及围堰内河床上施作有高压旋喷桩(6)，在高压旋喷桩(6)的顶部施作有级配碎石褥垫层(15)，在级配碎石褥垫层（15）上设置有素混凝土垫层（7），在既有桥梁的桥桩基承台(3)的内侧面上施作有承台植筋(9)，在既有桥梁的桥桩基桥台(4)的内侧面上施作有桥台植筋(10)，在既有桥梁的桥桩基承台(3)的内侧、既有桥梁的桥桩基桥台(4)的内侧及素混凝土垫层(7)之间施作有现浇U型结构筏板(8)，在现浇U型结构筏板(8)的顶面与既有桥梁的桥板(5)的底面之间形成有4厘米的缝隙(11)。还提供了一种桥梁桩基的U型结构托换转移系统施工方法。
Patent WO-2018153301-A1 (WO)
Title: 改性y型分子筛、其制备方法及包含它的催化剂
Inventor: ZHOU LINGPING
IPC: B01J29/08
Filed: 2018-02-12
Abstract: 公开了一种富含二级孔的含稀土的改性Y型分子筛及其制备方法，以及包含该改性Y型分子筛的催化剂。该改性Y型分子筛的氧化稀土含量为约4-12重量％，磷含量为约0-10重量％，氧化钠含量不超过约1.0重量％，总孔体积为约0.36-0.48mL/g，二级孔的孔体积占总孔体积的约20-40％，晶胞常数为约2.440-2.455nm，非骨架铝含量占总铝含量的不高于约10％，晶格崩塌温度不低于约1060℃，B酸量与L酸量的比值不低于约3.50。该分子筛的制备方法包括交换稀土、水热焙烧处理、气相超稳改性和酸处理步骤，以及任选的引入磷的步骤。该改性Y型分子筛，用于重油催化裂化时，具有更高的重油转化活性和较低的焦炭选择性，以及更高的汽油收率、液化气收率、轻质油收率和总液收。
Patent WO-2018171379-A1 (WO)
Title: Procédé et dispositif de synchronisation dans un système de communication sans fil
Inventor: LI GEN
IPC: H04W48/16
Filed: 2018-02-24
Abstract: L'invention concerne un procédé et un appareil de synchronisation dans un système de communication sans fil. Le procédé comprend les étapes suivantes : la diffusion de multiples blocs de signaux de synchronisation (BSS) à l'intérieur d'une même porteuse ; et la diffusion d'un indicateur d'informations de système selon des informations incluses dans les multiples BSS. Chacun des multiples BSS est envoyé sur un ensemble différent de sous-porteuses. La demande de partage équitable de ressources spectrales peut donc être satisfaite.
Patent WO-2019019632-A1 (WO)
Title: Task dimension-based closing method and apparatus, and storage medium and terminal
Inventor: LIU ZHILONG
IPC: G06F17/30
Filed: 2018-02-27
Abstract: The present application is suitable for the technical field of communications, and provided are a task dimension-based closing method and apparatus, and a storage medium and a terminal. The method comprises: obtaining a list of potential customers and products that the potential customers follow; establishing, according to the list of potential customers, a processing node for the potential customers on an interface where an operation is to be performed, and establishing, under the processing node for the potential customers, task items of the products that the potential customers follow, wherein one product corresponds to one task item; and when it is detected that an agent initiates a closing request on the interface where an operation is to be performed, marking a task item corresponding to the closing request as closed, so as to remove products that the potential customers have no intentions towards, and to reserve unclosed task items on the interface where an operation is to be performed. The present application enables an agent to close task items of products that potential customers have no intentions towards, and then can also promote other products to the potential customers, thereby effectively reducing the loss of name list data and the influence on profit conditions.
Patent WO-2018166438-A1 (WO)
Inventor: WANG FEI
IPC: G06K9/62
Filed: 2018-03-13
Abstract: La présente invention concerne un procédé et un dispositif de traitement d'image, et un dispositif électronique. Un mode de réalisation du procédé de traitement d'image consiste : à extraire des caractéristiques d'une image à traiter afin d'obtenir une première image caractéristique de l'image ; à générer une image d'attention de l'image sur la base de la première image caractéristique décrite ; à fusionner l'image d'attention et la première image caractéristique afin d'obtenir une image fusionnée ; et à ré-extraire des caractéristiques de l'image sur la base de l'image fusionnée décrite. Le mode de réalisation introduit un mécanisme d'attention dans le traitement d'image, améliorant ainsi efficacement l'efficacité d'acquisition d'informations à partir de l'image.
Patent WO-2019052151-A1 (WO)
Title: Dashboard display method and apparatus, terminal device and storage medium
Inventor: LI LEI
IPC: G01D7/00
Filed: 2018-03-30
Abstract: A dashboard display method and apparatus, a terminal device and a storage medium. The dashboard display method comprises: acquiring data to be displayed (S10); based on the data to be displayed, acquiring a corresponding upper data limit, a corresponding lower data limit and corresponding N thresholds, where N≥2 (S20); based on the N thresholds, acquiring a corresponding dashboard template, the dashboard template comprising N+1 display areas (S30); displaying the upper data limit, the lower data limit and the N thresholds on the dashboard template, so as to acquire a target dashboard (S40); and based on the data to be displayed, acquiring an indication position, in the target dashboard, of the data to be displayed, and controlling a pointer so same points to the indication position (S50). The dashboard display method is applied where two thresholds in a dashboard are very close, and a formed display area needs to be displayed in an enlarged manner, so that when data to be displayed is between the two close thresholds, a pointer can clearly and intuitively indicate, in the target instrument, the data to be displayed.
Patent WO-2019161603-A1 (WO)
Title: Array substrate, display panel, and manufacturing method for array substrate
Inventor: CHEN CHEN
IPC: H01L21/84
Filed: 2018-04-12
Abstract: An array substrate used for forming a display panel, comprising a substrate (10), a thin film transistor (20) arranged on said substrate (10), and a flat layer (30) arranged on said substrate (10) and said thin film transistor (20). Said flat layer (30) is provided with a first through hole (301) exposing the drain electrode (201) of the thin film transistor (20). The surface of the flat layer (30) away from the substrate (10) is provided with a pixel electrode layer (40), which covers the first through hole (301) and makes contact with the drain electrode (201). Said pixel electrode layer (40) is covered with a photoresist layer (50), which fills the first through hole (301) covered by the pixel electrode layer (40). This array substrate addresses the problem of poor product quality due to height inconsistency.
Patent WO-2018201896-A1 (WO)
Title: 表结构建模方法、装置、服务器及介质
Inventor: LI ZHI
IPC: G06F17/30
Filed: 2018-04-18
Abstract: 本方案提供了一种表结构建模方法、装置、服务器及介质，适用于数据处理技术领域，该方法包括：上传至少一个表结构，每个所述表结构包含相应的代码信息，且各个所述表结构包含的代码信息不同；检测各个所述表结构并获取各个所述表结构之间的关联信息；根据各个所述表结构之间的关联关系，检测各个所述表结构之间的数据建模是否存在异常；在未检测到各个所述表结构之间的数据建模存在异常时，对各个所述表结构进行数据建模，数据模型中包含各个所述表结构之间的关联信息。本方案能够使得参与该项目的工作人员，直观快速的了解数据模型的结构和各个表结构之间的关联信息等，提高工作效率，且能够做好关联影响分析，消除修改代码带来的风险。
Patent WO-2019001129-A1 (WO)
Title: Method, apparatus, and system for measuring transmission performance
Inventor: CHENG JIAN
IPC: H04L12/26
Filed: 2018-04-27
Abstract: Disclosed by the embodiments of the present invention are a method, apparatus, and system for measuring transmission performance. The method comprises: after successively receiving data packets, having serial numbers of N1 and N2, sent by a transmitting device by means of a reliable transmission protocol-based connection established between said transmitting device and a receiving device, a detection apparatus determining that N2 is greater than N1 and is discontinuous with N1; after receiving a data packet having a serial number N2, receiving a data packet having a serial number M1, and if M1 is determined to be greater than N1 and less than N2 and T2-T1 is determined to be greater than or equal to RTT, then determining the data packet having the serial number M1 to be a retransmitted packet corresponding to an upstream packet loss; T1 is the time for the detection apparatus to receive the data packet having the serial number N2; T2 is the time for the detection apparatus to receive the data packet having the serial number M1; RTT is a bidirectional delay between the transmitting device and the receiving device. Since the detection apparatus itself can measure packet loss, implementation is simple and efficiency is high.
Patent WO-2019080477-A1 (WO)
Title: Computer-based interlocking system and redundancy switching method thereof
Inventor: LIU XIAODONG
IPC: G06F11/20
Filed: 2018-05-10
Abstract: A computer-based interlocking system and a redundancy switching method based on the interlocking system. The computer-based interlocking system comprises an interlocking subsystem; the interlocking subsystem comprises an interlocking I system and an interlocking II system that are the same and are connected to each other; the interlocking I system and the interlocking II system each comprises two CPUs having the same hardware and adopting task-level synchronization; the two CPUs respectively run executable files generated by compiling the same program code using different compilers. According to the system, heterogeneous software/hardware and program running starting times with a fixed difference are adopted to reduce the probability of occurrence of common-mode failures; thus, the development difficulty is lowered, the production efficiency is improved, and requirements for debugging and maintenance are lowered while reducing common-mode failures.
Patent WO-2018214754-A1 (WO)
Title: Triazole derivative and use thereof in agriculture
Inventor: LI YITAO
IPC: A01N43/653
Filed: 2018-05-11
Abstract: Provided are a triazole derivative and the use thereof in agriculture. Specifically, provided are a compound as shown in formula (I) or a stereoisomer, an oxynitride and a salt of the compound shown in formula (I), and a preparation method therefor; a composition and a preparation containing the compounds and the use thereof for preventing and treating phytopathogenic fungi, wherein R1, R2, Y, L1, L2 and ring A have the meanings as described in the present invention.